Massif US Army Combat Shirt (ACS) Flame Resistant ACU Full flame-resistant construction with proprietary Massif fabrics Lightweight, ultra-breathable and wicking torso fabric Durable, breathable sleeve fabric 4-way-stretch fabrics Seamless side-panel construction increases comfort under armor Velcro loop for name, rank, flag, and unit tape Wrist cuffs adjust for a customizable fit Lightweight elbow pads with abrasion-resistant SuperFabric technology Machine washable